Containing leaven. / (figuratively) Inducing change, especially a corrupting or vitiating change.

plural of leavener

Any agent that promotes leavening.

Any organism or substance added to a food product (such as dough or batter) that makes it rise when cooked.

plural of leavening agent

without any yeast or other raising agent

(archaic) Third-person singular simple present indicative form of leaven

(archaic) second-person singular simple present form of leaven

One of 105 counties in Kansas, United States. County seat: Leavenworth.

A surname. / A city, the county seat of Leavenworth County, Kansas. / A city in Washington. / A town in Indiana; named for founders Zebulon and Seth Leavenworth.